Audi TT, TTS, TT RS Roadster, 8J9 (EU)

Transfer case fluid capacity & service interval

Audi TT, TTS, TT RS Roadster, 8J9 (EU) models require transfer case fluid with a capacity of 0,9 liters. Service intervals consist of a check every 24 months or 30000 km. The data covers 9 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • TT RS Roadster plus 2.5 TFSI quattro (2011-2014)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter
  • Check 24 months/ 30000 km
  • TT Roadster 2.0 TDI quattro (2010-2014)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter
  • TT Roadster 2.0 TFSI quattro (155 kW) (2010-2014)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter
  • TT RS Roadster 2.5 TFSI quattro (2009-2014)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter
  • Check 24 months/ 30000 km
  • TT Roadster 2.0 TDI quattro (2008-2010)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter
  • TT Roadster 2.0 TFSI quattro (147 kW) (2008-2010)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter
  • TTS Roadster 2.0 TFSI quattro (195 kW) (2008-2014)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter
  • TTS Roadster 2.0 TFSI quattro (200 kW) (2008-2014)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter
  • TT Roadster 3.2 quattro (2007-2010)
  • Angle gearbox
  • Use: Normal
  • Capacity 0,9 liter

Additional Notes

  • Every quattro variant in the Audi TT, TTS, and TT RS Roadster 8J9 range carries a transfer case (angle gearbox / transferbox) fluid capacity of exactly 0.9 liter, a figure consistent with the compact, transversely mounted Haldex-type transfer units used in these front-biased all-wheel-drive platforms.
  • A 0.9 liter capacity is characteristic of a service fill quantity rather than a full overhaul or dry fill, meaning the unit retains residual fluid during a standard drain-and-refill procedure.
  • The TT RS Roadster 2.5 TFSI quattro (2009-2014) and TT RS Roadster plus 2.5 TFSI quattro (2011-2014) are the only configurations in the lineup that carry an explicit inspection interval: 24 months or 30,000 km under normal use conditions, whichever comes first.
  • The 24-month / 30,000 km check interval on the TT RS Roadster variants reflects a time-and-distance dual trigger, meaning the interval closes when either threshold is reached, not necessarily both.
  • The remaining quattro variants — spanning the 2.0 TDI, 2.0 TFSI, 3.2, and TTS 2.0 TFSI configurations — list only a fluid capacity with no accompanying check or change interval in the specifications.
  • The 2.0 TFSI quattro engine appears in two distinct output ratings across the TT Roadster range: 147 kW (2008-2010) and 155 kW (2010-2014). Both share the same 0.9 liter transfer case capacity despite the difference in power output.
  • Similarly, the TTS Roadster 2.0 TFSI quattro is listed in two output variants — 195 kW and 200 kW — both covering the 2008-2014 period and both specifying the same 0.9 liter transfer case capacity.
  • The 2.0 TDI quattro application spans two separate year-range entries: 2008-2010 and 2010-2014. Both entries carry identical 0.9 liter capacity figures, with 2010 appearing as a shared boundary year between the two listings.
  • All specifications across the lineup are designated for normal use conditions, meaning the intervals and capacities listed do not account for severe-duty operating environments such as towing, track use, or extreme climates.

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